In some ways you’re asking the impossible. People don’t necessarily notice a culture when they’re surrounded by it all the time. You don't see it because you are it. In the same way I don't have an accent when surrounded by people who sound the same.
Culture often gets reduced to food and national dress, when really those things are the most surface level cultural things. Culture runs far deeper than that, especially in England, which has no national dress. There are lots of examples of British culture that people cherish and wish to preserve.
Preserving British culture doesn’t mean freezing the country in time or rejecting change. It means protecting and valuing the things that have historically defined the UK, like free speech, the rule of law, individual liberty, the English language, local traditions, national holidays, Christian ethics, a sense of humour.
It’s about keeping the cultural DNA intact while still allowing for evolution, so integration adds to the nation, not replacing it. Just as you’d expect someone moving to Japan to respect Japanese norms, preserving British culture means maintaining a core identity that new generations and newcomers recognise, assimilate into and contribute to, not dilute.
Culture isn’t about race. It’s about values, heritage, language and shared understanding. It’s everyone sharing those values and upholding them. Otherwise this is just a holding pen for people, an island of strangers, as Starmer recently said.